save project

diy1.py

 import turtle
 import turtle
 screen=turtle.Screen()
 screen=turtle.Screen()
 screen.bgcolor("light blue")
 screen.bgcolor("light blue")
-len=100
+len=screen.textinput("提示","你想输入多少")
+lielen=int(len)
 pen=turtle.Pen()
 pen=turtle.Pen()
 pen.penup()
 pen.penup()
 pen.goto(100,-100)
 pen.goto(100,-100)
@@ -11,10 +12,10 @@ Pen1=turtle.Pen()
 Pen1.pensize(5)
 Pen1.pensize(5)
 Pen1.pencolor("red")
 Pen1.pencolor("red")
 Pen1.left(45)
 Pen1.left(45)
-Pen1.forward(len)
-Pen1.circle(len/2,180)
+Pen1.forward(lielen)
+Pen1.circle(lielen/2,180)
 Pen1.right(90)
 Pen1.right(90)
-Pen1.circle(len/2,180)
+Pen1.circle(lielen/2,180)
 Pen1.forward(100)
 Pen1.forward(100)
 Pen1.hideturtle()
 Pen1.hideturtle()
 turtle.done()
 turtle.done()